Exploratory Evaluation of Biomarkers Associated With Treatment Response to Cosentyx (Secukinumab) in Psoriasis Patients

To identify possible genetic associations of clinical response to anti-IL-17A (Secukinumab) treatment in psoriasis using a combined gene association study and gene expression analysis. To investigate the influence of IL-17A on the cutaneous microbial flora and to analyse cutaneous antimicrobial peptide expression in the skin of patients with psoriasis prior to, and during, treatment with Secukinumab to determine the extent to which the microbial flora is associated with response to treatment, as determined by the PASI75, PASI90, PGA- and DLQI improvement.